/*
 *  Copyright 2008-2010 www.jrails.org
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

package org.rails.extjs;

import org.rails.extjs.Listener;
import org.rails.extjs.javascript.Function;

public abstract class Observable extends AbsBase {

	protected final Option listeners = new Option();
	
	public Observable() {
		super();
	}
	
	protected void createItems() {
		if (listeners.size() > 0)
			addOption("listeners",listeners);
	}
	
	public void addListener(Listener listener) {
		listeners.put(listener.getEventName(), listener.getFunction());
	}

	public void removeListener(String eventName) {
		listeners.remove(eventName);
	}

	public void setListener(Option listeners) {
		 listeners.clear();
		 listeners.putAll(listeners);
	}
	
	public Function getListener(String eventName) {
		return (Function) listeners.get(eventName);
	}

	public void clearListeners() {
		listeners.clear();
	}
	
}
